Re: Acer Laptop overheating with ACPI error that I don't understand.

On Wednesday 15 July 2009 01:35:03 eculp wrote:
> I am having overheating problems with my Acer Aspire laptop.
> # uname -a
> FreeBSD ed.local.net.mx 8.0-BETA1 FreeBSD 8.0-BETA1 #256: Thu Jul  9
> 07:05:20 CDT 2009
> root_at_ed.local.net.mx:/usr/obj/usr/src/sys/ENCONTACTO  i386
>
> I've been having this problem for several months and compensating by
> reducing dev.cpu.0.freq from 1900 to 1200 and 800 in warm offices.
>
> The errors I'm seeing in the log files are:
>
> +acpi_ec0: EcRead: failed waiting to get data
> +ACPI Exception: AE_NO_HARDWARE_RESPONSE, Returned by Handler for
> [EmbeddedControl] 20090521 evregion-531
> +ACPI Error (psparse-0633): Method parse/execution failed
> [\\_TZ_.THRM._TMP] (Node 0xc4e75960), AE_NO_HARDWARE_RESPONSE
>
> I'm afraid that I don't understand them.
>
> Any suggestions appreciated,
>
> ed

A similar problem has been discussed on freebsd-acpi_at_.  A patch was created 
that *may* help you.  Here are some of the links:

Start of discussion: http://markmail.org/message/oervuwnjmfmyqwxi
Second patch: http://markmail.org/message/yvd523kg5blvhhab

And attached for the second patch (these mail readers just love eating my 
homework :) )

Good luck,

David